Harvard Law professor emeritus Alan Dershowitz said the push to disbar former Mayor Rudy Giuliani is a form of “McCarthyism,” adding that he would defend him. Over the past several weeks, there have been growing calls to disbar Giuliani, who had served as former President Donald Trump’s personal attorney in response to claims of voter fraud during the Nov. 3 presidential election. “It’s McCarthyism. I grew up during McCarthyism when the lawyers were being disbarred for representing clients that people didn’t like,” Dershowitz said Sunday on New York WABC 770 AM radio. “Rudy is a lawyer. And that’s what he is supposed to do. And if his client says, ‘Challenge the election,’ he challenges the election,” according to Dershowitz. “If you don’t agree with his analysis, answer it in the court of public opinion. But don’t disbar him. Are we going to disbar Adam Schiff? Adam Schiff got on the …